A portal is an opening in a wall of a building, gate or fortification, especially a grand entrance to an important structure.[1][page needed] Doors, metal gates, or portcullis in the opening can be used to control entry or exit. The surface surrounding the opening may be made of simple building materials or decorated with ornamentation. The elements of a portal can include the voussoir, tympanum, an ornamented mullion or trumeau between doors, and columns with carvings of saints in the westwork of a church.[citation needed]

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Chartres Cathedral
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Chartres Cathedral, also known as the Cathedral of Our Lady of Chartres, is a Gothic Catholic cathedral of the Latin Church located in Chartres, France, about 80 kilometres southwest of Paris. The current cathedral, mostly constructed between 1194 and 1220, is the last of at least five which have occupied the site since the town became a bishopric in the 4th century. It is designated a World Heritage Site by UNESCO, which calls it the point of French Gothic art. The cathedral has been well preserved, the majority of the original stained glass windows survive intact, while the architecture has seen only minor changes since the early 13th century. Equally notable are the three great façades, each adorned with hundreds of sculpted figures illustrating key theological themes and narratives, in the Middle Ages, the cathedral functioned as a kind of marketplace, with different commercial activities centred on the different portals, particularly during the regular fairs. Textiles were sold around the transept, while meat, vegetable. Money-changers had their benches, or banques, near the west portals, wine sellers plied their trade in the nave, although occasional 13th-century ordinances survive which record their being temporarily banished to the crypt to minimise disturbances. Workers of various professions gathered in particular locations around the cathedral awaiting offers of work. In 1258, after a series of bloody riots instigated by the counts officials, even before the Gothic cathedral was built, Chartres was a place of pilgrimage, albeit on a much smaller scale. The widespread belief that the cathedral was also the site of a pre-Christian druidical sect who worshipped a Virgin who will give birth is purely a late-medieval invention. This is one view, however scholars have written about the Cult of the Virgin Mary. Before the Christian church was built, the used to be dedicated to a fertility goddess. When the Catholic church took over the site, they made a nod to the cult by depicting the life of Mary on the tympana. However, the Church also reminded the women that, as women and they did this by placing Mary in the far right tympanum, holding the baby Christ on her lap. By doing this, they reminded the women that they existed only to serve Christ, just as, in biblical stories, around 876 the cathedral acquired the Sancta Camisa, believed to be the tunic worn by the Blessed Virgin Mary at the time of Christs birth. According to legend, the relic was given to the cathedral by Charlemagne who received it as a gift from Emperor Constantine VI during a crusade to Jerusalem. This legend, however, was pure fiction – probably invented in the 11th century to authenticate some relics at the Abbey of St Denis. In fact, the relic was a gift to the cathedral from Charles the Bald, by the end of the 12th century, however, the church had become one of the most important popular pilgrimage destinations in Europe

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Ornament (art)
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In architecture and decorative art, ornament is a decoration used to embellish parts of a building or object. A wide variety of styles and motifs have been developed for architecture. In textiles, wallpaper and other objects where the decoration may be the justification for its existence. The vast range of used in ornament draw from geometrical shapes and patterns, plants. In a 1941 essay, the architectural historian Sir John Summerson called it surface modulation, the earliest decoration and ornament often survives from prehistoric cultures in simple markings on pottery, where decoration in other materials has been lost. Ornament implies that the object has a function that an unornamented equivalent might also fulfill. Where the object has no function, but exists only to be a work of art such as a sculpture or painting. In recent centuries a distinction between the arts and applied or decorative arts has been applied, with ornament mainly seen as a feature of the latter class. Ornament increased over the Romanesque and Gothic periods, but was reduced in Early Renaissance styles. While the concept of the Kunstwollen has few followers today, his analysis of the development of forms has been confirmed and refined by the wider corpus of examples known today. Styles of ornamentation can be studied in reference to the culture which developed unique forms of decoration. The Ancient Egyptian culture is arguably the first civilization to add decoration to their buildings. Their ornament takes the forms of the world in that climate, decorating the capitals of columns and walls with images of papyrus. Assyrian culture produced ornament which shows influence from Egyptian sources and a number of themes, including figures of plants. Ancient Greek civilization created many new forms of ornament, with variations from Doric, Ionic. The Romans Latinized the pure forms of the Greek ornament and adapted the forms to every purpose, a few medieval notebooks survive, most famously that of Villard de Honnecourt showing how artists and craftsmen recorded designs they saw for future use. As printing became cheaper, the single ornament print turned into sets, from the 16th to the 19th century, pattern books were published in Europe which gave access to decorative elements, eventually including those recorded from cultures all over the world. Napoleon had the great pyramids and temples of Egypt documented in the Description de lEgypte, owen Jones published The Grammar of Ornament in 1856 with colored illustrations of decoration from Egypt, Turkey, Sicily and Spain

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Tympanum (architecture)
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In architecture, a tympanum is the semi-circular or triangular decorative wall surface over an entrance, door or window, bounded by a lintel and arch. It often contains sculpture or other imagery or ornaments, most architectural styles include this element. In ancient Greek, Roman and Christian architecture, tympana usually contain religious imagery, a tympanum over a doorway is very often the most important, or only, location for monumental sculpture on the outside of a building. These shapes naturally influence the typical compositions of any sculpture within the tympanum, bands of molding surrounding the tympanum are referred to as the archivolt. In medieval French architecture the tympanum is often supported by a pillar called a trumeau. Gable Pediment Portal Sculpted tympanums Chartres Cathedral, West Front, Central Portal Tympanum of the last Judgment - western portal of the abbey-church of Saint Foy

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Column
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A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member, the term column applies especially to a large round support with a capital and a base or pedestal and made of stone, or appearing to be so. A small wooden or metal support is called a post. For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces, other compression members are often termed columns because of the similar stress conditions. Columns are frequently used to support beams or arches on which the parts of walls or ceilings rest. In architecture, column refers to such an element that also has certain proportional. A column might also be an element not needed for structural purposes, many columns are engaged. All significant Iron Age civilizations of the Near East and Mediterranean made some use of columns, egyptian columns are famously present in the Great Hypostyle Hall of Karnak, where 134 columns are lined up in 16 rows, with some columns reaching heights of 24 metres. Some of the most elaborate columns in the ancient world were those of the Persians and they included double-bull structures in their capitals. The Hall of Hundred Columns at Persepolis, measuring 70 ×70 metres, was built by the Achaemenid king Darius I, many of the ancient Persian columns are standing, some being more than 30 metres tall. The Minoans used whole tree-trunks, usually turned upside down in order to prevent re-growth, stood on a set in the stylobate. These were then painted as in the most famous Minoan palace of Knossos, the Minoans employed columns to create large open-plan spaces, light-wells and as a focal point for religious rituals. These traditions were continued by the later Mycenaean civilization, particularly in the megaron or hall at the heart of their palaces. Being made of wood these early columns have not survived, but their bases have and through these we may see their use. The Greeks developed the classical orders of architecture, which are most easily distinguished by the form of the column and their Doric, Ionic, and Corinthian orders were expanded by the Romans to include the Tuscan and Composite orders. Columns, or at least large structural exterior ones, became less significant in the architecture of the Middle Ages. Early columns were constructed of stone, some out of a piece of stone. Monolithic columns are among the heaviest stones used in architecture, other stone columns are created out of multiple sections of stone, mortared or dry-fit together

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Church (building)
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A church building, often simply called a church, is a building used for Christian religious activities, particularly worship services. The term in its sense is most often used by Christians to refer to their religious buildings. In traditional Christian architecture, the church is arranged in the shape of a Christian cross. When viewed from plan view the longest part of a cross is represented by the aisle, towers or domes are often added with the intention of directing the eye of the viewer towards the heavens and inspiring church visitors. The earliest identified Christian church was a church founded between 233 and 256. During the 11th through 14th centuries, a wave of building of cathedrals, a cathedral is a church, usually Roman Catholic, Anglican, Oriental Orthodox or Eastern Orthodox, housing the seat of a bishop. In standard Greek usage, the word ecclesia was retained to signify both a specific edifice of Christian worship, and the overall community of the faithful. This usage was retained in Latin and the languages derived from Latin, as well as in the Celtic languages. In the Germanic and some Slavic languages, the word kyriak-ós/-ē/-ón was adopted instead, in Old English the sequence of derivation started as cirice, then churche, and eventually church in its current pronunciation. German Kirche, Scottish kirk, Russian церковь, etc. are all similarly derived, according to the New Testament, the earliest Christians did not build church buildings. Instead, they gathered in homes or in Jewish worship places like the Second Temple or synagogues, the earliest archeologically identified Christian church is a house church, the Dura-Europos church, founded between 233 and 256. During the 11th through 14th centuries, a wave of building of cathedrals, in addition to being a place of worship, the cathedral or parish church was used by the community in other ways. It could serve as a place for guilds or a hall for banquets. Mystery plays were performed in cathedrals, and cathedrals might also be used for fairs. The church could be used as a place to thresh and store grain, a common architecture for churches is the shape of a cross. These churches also often have a dome or other large vaulted space in the interior to represent or draw attention to the heavens. Other common shapes for churches include a circle, to represent eternity, or an octagon or similar star shape, another common feature is the spire, a tall tower on the west end of the church or over the crossing. The Latin word basilica was used to describe a Roman public building

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Brescia
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Brescia is a city and comune in the region of Lombardy in northern Italy. It is situated at the foot of the Alps, a few kilometres from the lakes Garda, with a population of 196,480, it is the second largest city in the region and the fourth of northwest Italy. The urban area of Brescia extends beyond the city limits and has a population of 672,822. The city is the capital of the Province of Brescia, one of the largest in Italy. Founded over 3,200 years ago, Brescia has been an important regional centre since pre-Roman times, Brescia is considered the industrial capital of Italy. The metallurgy and the production of tools and firearms are of particular economic significance, along with mechanical. In addition, Brescia is the setting for most of the action in Alessandro Manzonis 1822 play Adelchi, Brescia and its territory will be the European Region of Gastronomy in 2017. Various myths relate to the founding of Brescia, one assigns it to Hercules while another attributes its foundation as Altilia by a fugitive from the siege of Troy. According to another myth, the founder was the king of the Ligures, Cidnus, colle Cidneo was named after that version, and it is the site of the medieval castle. Others scholars attribute the founding of Brescia to the Etruscans, the Gallic Cenomani, allies of the Insubres, invaded in the 7th century BC, and used the town as their capital. The city became Roman in 225 BC, when the Cenomani submitted to the Romans, during the Carthaginian Wars, Brixia was allied with the Romans. During a Celtic alliance against the city remained fateful to the Romans, with their Roman allies the city remain and attacked and destroyed the Insubres by surprise. Subsequently, the city and the tribe entered the Roman world peacefully as faithful allies, in 89 BC, Brixia was recognized as civitas and in 41 BC, its inhabitants received Roman citizenship. Augustus founded a colony there in 27 BC, and he. Roman Brixia had at least three temples, an aqueduct, a theatre, a forum with another temple built under Vespasianus, when Constantine advanced against Maxentius in 312, an engagement took place at Brixia in which the enemy was forced to retreat as far as Verona. In 402, the city was ravaged by the Visigoths of Alaric I, during the 452 invasion of the Huns under Attila, the city was besieged and sacked. Forty years later, it was one of the first conquests by the Gothic general Theoderic the Great in his war against Odoacer, in 568, Brescia was taken from the Byzantines by the Lombards, who made it the capital of one of their semi-independent duchies. The first duke was Alachis, who died in 573, later dukes included the future kings of the Lombards Rothari and Rodoald, and Alachis II, a fervent anti-Catholic who was killed in battle at Cornate dAdda in 688

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Arch
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An arch is a curved structure that spans a space and may or may not support weight above it. Arch may be synonymous with vault, but a vault may be distinguished as a continuous arch forming a roof, an arch is a pure compression form. It can span an area by resolving forces into compressive stresses and. This is sometimes referred to as arch action, as the forces in the arch are carried to the ground, the arch will push outward at the base, called thrust. As the rise, or height of the arch decreases, the outward thrust increases, in order to maintain arch action and prevent the arch from collapsing, the thrust needs to be restrained, either with internal ties or external bracing, such as abutments. The most common true arch configurations are the arch, the two-hinged arch. The fixed arch is most often used in reinforced concrete bridge and tunnel construction, because it is subject to additional internal stress caused by thermal expansion and contraction, this type of arch is considered to be statically indeterminate. The two-hinged arch is most often used to long spans. This type of arch has pinned connections at the base, unlike the fixed arch, the pinned base is able to rotate, allowing the structure to move freely and compensate for the thermal expansion and contraction caused by changes in outdoor temperature. However, this can result in additional stresses, so the two-hinged arch is also statically indeterminate, the three-hinged arch is not only hinged at its base, like the two-hinged arch, but at the mid-span as well. The additional connection at the mid-span allows the arch to move in two opposite directions and compensate for any expansion and contraction. This type of arch is not subject to additional stress caused by thermal change. The three-hinged arch is said to be statically determinate. It is most often used for structures, such as large building roofs. Another advantage of the arch is that the pinned bases are more easily developed than fixed ones, allowing for shallow. Arches have many forms, but all fall into three categories, circular, pointed, and parabolic. Arches can also be configured to produce vaults and arcades, Arches with a circular form, also referred to as rounded arches, were commonly employed by the builders of ancient, heavy masonry arches. Ancient Roman builders relied heavily on the arch to span large

8.
Metz
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Metz is a city in northeast France located at the confluence of the Moselle and the Seille rivers. Metz is the prefecture of the Moselle department and the seat of the parliament of the Great East region, located near the tripoint along the junction of France, Germany, and Luxembourg, the city forms a central place of the European Greater Region and the SaarLorLux euroregion. The city has been steeped in Romance culture, but has strongly influenced by Germanic culture due to its location. Because of its historical, cultural, and architectural background, Metz has been submitted on Frances UNESCO World Heritage Tentative List, Metz is home to some world-class venues including the Arsenal Concert Hall and the Centre Pompidou-Metz museum. A basin of urban ecology, Metz gained its nickname of The Green City, as it has extensive open grounds, the historic city centre is one of the largest commercial pedestrian areas in France. A historic garrison town, Metz is the heart of the Lorraine region, specialising in information technology. In ancient times, the town was known as city of Mediomatrici, after its integration into the Roman Empire, the city was called Divodurum Mediomatricum, meaning Holy Village or Holy Fortress of the Mediomatrici, then it was known as Mediomatrix. During the 5th century AD, the name evolved to Mettis, Metz has a recorded history dating back over 3,000 years. Before the conquest of Gaul by Julius Caesar in 52 BC, between the 6th and 8th centuries, the city was the residence of the Merovingian kings of Austrasia. After the Treaty of Verdun in 843, Metz became the capital of the Kingdom of Lotharingia and was integrated into the Holy Roman Empire. During the 12th century, Metz rose to the status of Republic, with the signature of the Treaty of Chambord in 1552, Metz passed to the hands of the Kings of France. Under French rule, Metz was selected as capital of the Three Bishoprics, with creation of the departments by the Estates-General of 1789, Metz was chosen as capital of the Department of Moselle. Metz remained German until the end of World War I, when it reverted to France, however, after the Battle of France during the Second World War, the city was annexed once more by the German Third Reich. In 1944, the attack on the city by the U. S, Third Army freed the city from German rule and Metz reverted one more time to France after World War II. During the 1950s, Metz was chosen to be the capital of the newly created Lorraine region, with the creation of the European Community and the later European Union, the city has become central to the Greater Region and the SaarLorLux Euroregion. Metz is located on the banks of the Moselle and the Seille rivers,43 km from the Schengen tripoint where the borders of France, Germany, and Luxembourg meet. The city was built in a place where branches of the Moselle river creates several islands. The terrain of Metz forms part of the Paris Basin and presents a plateau relief cut by river valleys presenting cuestas in the north-south direction

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Tunnel
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A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods, a tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a transit network are usually in tunnel. Some tunnels are aqueducts to supply water for consumption or for hydroelectric stations or are sewers, utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment. Secret tunnels are built for military purposes, or by civilians for smuggling of weapons, contraband, special tunnels, such as wildlife crossings, are built to allow wildlife to cross human-made barriers safely. A tunnel is relatively long and narrow, the length is much greater than twice the diameter, although similar shorter excavations can be constructed. The definition of what constitutes a tunnel can vary widely from source to source, for example, the definition of a road tunnel in the United Kingdom is defined as a subsurface highway structure enclosed for a length of 150 metres or more. In the United States, the NFPA definition of a tunnel is An underground structure with a length greater than 23 m. The place where a road, railway, canal or watercourse passes under a footpath, cycleway, or another road or railway is most commonly called a bridge or, if passing under a canal, an aqueduct. Where it is important to stress that it is passing underneath, it may be called an underpass, a longer underpass containing a road, canal or railway is normally called a tunnel, whether or not it passes under another item of infrastructure. An underpass of any length under a river is usually called a tunnel. In the US, the term means an underground rapid transit system. Rail station platforms may be connected by tunnels or footbridges. Much of the technology of tunneling evolved from mining and military engineering. The etymology of the mining, military engineering, and civil engineering reveals these deep historic connections. A major tunnel project must start with an investigation of ground conditions by collecting samples from boreholes. An informed choice can then be made of machinery and methods for excavation and ground support, in planning the route, the horizontal and vertical alignments can be selected to make use of the best ground and water conditions. It is common practice to locate a tunnel deeper than otherwise would be required and this may be a particular concern in large-diameter tunnels

10.
Gate
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A gate or gateway is a point of entry to a space which is enclosed by walls. Gates may prevent or control the entry or exit of individuals, other terms for gate include yett and port. The word derives from the old Norse gata, meaning road or path, and originally referred to the gap in the wall or fence, rather than the barrier which closed it. The moving part or parts of a gateway may be called doors, a gate may have a latch to keep it from swinging and a lock for security. Larger gates can be used for a building, such as a castle or fortified town. Today, many doors are opened by an automated gate operator

11.
Mullion
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A mullion is a vertical element that forms a division between units of a window, door, or screen, or is used decoratively. When dividing adjacent window units, its purpose is to provide structural support to an arch or lintel above the window opening. Its secondary purpose may be as a support to the glazing of the window. When used to support glazing, they are teamed with horizontal elements called transoms which divide an openings upper part into one or more additional lights. In the commercial industry, the term floating mullion is also applied to an interlock profile which is fitted in between a pair of double swing doors. Stone mullions were used in Armenian, Saxon and Islamic architecture prior to the 10th century and they became common across Europe in the Romanesque architecture, with paired windows divided by a mullion, set beneath a single arch becoming a fashionable architectural form. The same structural form was used for open arcades as well as windows, in Gothic architecture windows became larger and arrangements of multiple mullions and openings were used, both for structure and ornament. This is particularly the case in Gothic churches where stained glass is set in lead, mullioned windows of a simpler form continued to be used into the Renaissance and various Revival styles. Italian windows with a mullion, dividing the window into two equal elements are said to be biforate, or to parallel the Italian, bifore windows. Mullions may be made of any material, but wood and aluminum are most common, I. M. Pei used all-glass mullions in his design of JFK Airports Terminal 6, unprecedented at the time. Mullions are vertical elements and are confused with transoms, which lie horizontally. The word is also confused with the muntin which is the word for the very small strips of wood or metal that divide a sash into smaller glass panes or lights. A mullion acts as a member, in most applications the mullion transfers wind loads and weight of the glazing. Although in the instance of a wall screen, the mullions only support the weight of the transoms, glass. Also in the case of a wall screen the weight of glazing can be supported from above this puts the mullions under tension rather than compression. In traditional designs today, mullions and transoms are normally used in combination with divided-light windows, came Glass mullion system Mullion wall Muntin Stained glass Transom Müller, W. G. Vogel. Examples of houses with mullioned windows in the UK